Hi yaook users, OpenStack published a Bug for keystone[1]. CVE-2026-42301 allows an attacker who gets hold of an unrestricted application credential to cross project boundaries to another project, if that project is accessible to the user who created the application credential. Thus, the project scoping of application credentials is broken. Also check our Security Advisory[2]. The following images are vulnerable: – keystone images before 3.0.86 – yaook release before 2.2.1 (<= 2.2.0) If this image is used in your cluster for the keystone-api deployment, the cluster is vulnerable. A new stable release will be published according to the release cycle. You can upgrade to that release simply by updating your operators. If you want to upgrade in advance you can pin your keystone image to 3.0.86 in the keystone-operator (adjust the OpenStack version to the version you have deployed): |values:   operator:     extraEnv:     - name: YAOOK_OP_VERSIONS_OVERRIDE       value: | ||          {               "registry.yaook.cloud/yaook/keystone-2023.2": "registry.yaook.cloud/yaook/keystone-2023.2:3.0.86",               "registry.yaook.cloud/yaook/keystone-2024.1": "registry.yaook.cloud/yaook/keystone-2024.1:3.0.86",               "registry.yaook.cloud/yaook/keystone-2024.2": "registry.yaook.cloud/yaook/keystone-2024.2:3.0.86",               "registry.yaook.cloud/yaook/keystone-2025.1": "registry.yaook.cloud/yaook/keystone-2025.1:3.0.86",               "registry.yaook.cloud/yaook/keystone-2025.2": "registry.yaook.cloud/yaook/keystone-2025.2:3.0.86"           }| Best regards Stefan [1] https://bugs.launchpad.net/keystone/+bug/2149775 [2] https://yaook.cloud/security-advisories-cve-2026-42301/ -- Stefan Hoffmann DevOps Engineer Cloud&Heat Technologies GmbH Königsbrücker Straße 96 | 01099 Dresden +49 351 479 367 36 stefan.hoffmann@cloudandheat.com |www.cloudandheat.com Green, Open, Efficient. Ihr Cloud-Service- und Cloud-Technologie-Provider aus Dresden. https://www.cloudandheat.com/ Commercial Register: District Court Dresden Register Number: HRB 30549 VAT ID No.: DE281093504 Managing Director: Nicolas Röhrs Authorized signatory: Dr. Marius Feldmann